Length matters
Increasing length expands the number of possible combinations exponentially. Therefore, use at least 16 characters when the service allows it.
Secure Password Generator
Use our free secure password generator to create strong, customized credentials using your browser’s cryptographically secure random-number engine. Additionally, credentials are created locally without sending data to external networks.
Create a strong random password
For important accounts, use a unique password of at least 16 characters and store it in a trusted password manager.
Password options
Choose between 4 and 128 characters. Longer passwords are generally harder to guess.
Generated password
The password is displayed only in this page. Copy it only on a device you trust.
Configure the options, then generate a password.
- Strength estimate
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- Estimated entropy
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- Character pool
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Security reminder
Use a different password for every account, enable multi-factor authentication, and never send passwords through insecure messages.
Web Crypto: random values come from the browser’s security-grade random source.
Local generation: this widget does not send or save generated passwords.
No history: changing settings, resetting or closing the page clears the displayed result.
What Makes a Generated Password Stronger?
Password strength depends mainly on length, randomness, and uniqueness. Furthermore, a long password created from a large character pool is far more resistant to guessing than a short or predictable phrase.
Uniqueness matters
In contrast, never reuse an important password. A password manager can generate, store, and fill a separate credential for each account.
How to Use the Secure Password Generator
Create and store a new password in three simple steps.
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Choose the length
First, set 16 or more characters unless the target account enforces a lower maximum limit.
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Select character types
Next, include the groups accepted by the website. The generator guarantees at least one character from every selected group.
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Generate and store
Finally, generate the password, copy it, and save it directly inside a trusted password manager.
How the Secure Password Generator Works
Specifically, the tool builds a pool from the selected character types. It requests random unsigned integers from the Web Cryptography API, rejects values that could create modulo bias, and maps remaining values evenly to pool positions.
Approximate entropy in bits = password length × log₂(character-pool size)
One character is first chosen from every selected group, remaining positions are filled from the combined pool, and the final array is securely shuffled. Consequently, the displayed entropy serves as guidance for overall credential strength.
Worked Secure Password Generator Example
Use the estimate as guidance and follow the account’s own requirements.
Worked example
For example, a 20-character password using 26 uppercase, 26 lowercase, 10 numeric, and 23 symbol characters has a pool of 85 characters and an estimated entropy of about 128 bits.
Important rules
In addition, do not include personal information, reuse passwords, or weaken a generated password into a memorable pattern.
Common Secure Password Generator Use Cases
Generate unique credentials for accounts and protected systems.
Online accounts
For instance, generate random password values for email, shopping, social, banking, and subscription accounts using a secure password generator.
Wi-Fi and devices
Similarly, create a long key for a wireless network, router, or supported device login with an online password generator.
Administrative access
In fact, construct strong credentials for dashboards using a strong password generator while following approved secrets-management processes.
Secure Password Generator FAQs
Are generated passwords sent to a server?
No. In fact, this widget generates and displays the password entirely inside your current browser session.
Is Web Crypto better than Math.random() for passwords?
Yes. Specifically, Web Crypto provides security-grade random values. This generator stops with an error if that API is unavailable instead of relying on weak pseudo-random functions.
How long should a password be?
Use at least 16 random characters when possible. Consequently, longer passwords are preferable for high-value accounts.
Should I exclude ambiguous characters?
Exclude them when a password must be typed manually. However, keeping them provides a slightly larger character pool.
Where should I save a generated password?
Without exception, save your new credentials inside a reputable password manager rather than unencrypted text files.
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